Alert archive / Florida / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 53, NWS Jacksonville, FL

May 10, 2025Duval County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at May 10, 2025, 9:36 AM EDT for Duval County, Florida. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 10, 2025, 9:36 AM EDT (13:36 UTC)
Expired: May 10, 2025, 10:00 AM EDT
In force: 24 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 13:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 1.6 hours before the alert went out and 301 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 316 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 8:18 AM EDT, 1 hour 18 minutes earlier.

Area forecast discussion, May 10, 8:18 AM EDT, 1 hour 18 minutes before

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In the hours before

Special weather statement, May 10, 8:30 AM EDT, 1 hour 6 minutes before

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Local storm report, May 10, 8:47 AM EDT, 49 minutes before

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Special weather statement, May 10, 8:51 AM EDT, 45 minutes before

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Special weather statement, May 10, 8:57 AM EDT, 39 minutes before

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Special weather statement, May 10, 9:19 AM EDT, 17 minutes before

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Special weather statement, May 10, 9:25 AM EDT, 11 minutes before

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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 8:01 PM EDT	Special Weather Statement	JAX	Putnam	44 min
May 9, 8:21 PM EDT	Special Weather Statement	JAX	Flagler	24 min
May 9, 8:24 PM EDT	Special Weather Statement	JAX	Marion	51 min
May 10, 12:23 AM EDT	Special Weather Statement	JAX	Levy	37 min
May 10, 5:57 AM EDT	Special Weather Statement	JAX	Suwannee	33 min
May 10, 8:25 AM EDT	Special Weather Statement	JAX	Gilchrist	50 min
May 10, 8:27 AM EDT	Special Weather Statement	JAX	Duval	48 min
May 10, 8:51 AM EDT	Special Weather Statement	JAX	Nassau	39 min
May 10, 8:57 AM EDT	Special Weather Statement	JAX	Union	48 min
May 10, 9:03 AM EDT	Severe Thunderstorm Warning	JAX	Nassau	27 min
May 10, 9:19 AM EDT	Special Weather Statement	JAX	Duval	41 min
May 10, 9:28 AM EDT	Special Marine Warning	JAX		62 min
May 10, 9:58 AM EDT	Special Weather Statement	JAX	Duval	32 min
May 10, 10:28 AM EDT	Special Marine Warning	JAX		92 min
May 10, 3:37 PM EDT	Special Weather Statement	JAX	Marion	53 min
May 10, 4:22 PM EDT	Special Weather Statement	JAX	Marion	53 min
May 10, 4:53 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	37 min
May 10, 5:12 PM EDT	Special Weather Statement	JAX	Alachua	48 min
May 10, 5:29 PM EDT	Special Weather Statement	JAX	Citrus	31 min
May 10, 5:56 PM EDT	Special Weather Statement	JAX	Alachua, Bradford	49 min
May 10, 6:19 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Baker, Bradford, Clay, Columbia, Putnam and 1 more	26 min
May 10, 6:29 PM EDT	Special Weather Statement	JAX	Hamilton, Suwannee	46 min
May 10, 6:44 PM EDT	Special Weather Statement	JAX	Baker, Bradford, Clay, Union	31 min
May 10, 6:52 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford, Clay, Duval, Nassau	23 min
May 10, 7:09 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Nassau	36 min
May 10, 7:12 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Clay, Duval, Nassau	33 min
May 10, 7:44 PM EDT	Special Weather Statement	JAX	Duval, Nassau	46 min
May 10, 8:30 AM EDT	Special Weather Statement	JAX	Charlton	45 min
May 10, 9:25 AM EDT	Special Weather Statement	JAX	Camden	50 min

Nearby

Severe Thunderstorm Warnings in Florida, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.